| Blink Pattern | Error Name | Likely Cause | Solution | | :--- | :--- | :--- | :--- | | 1 Red, pause | Overcurrent on Output | Short circuit on Q0-Q3 | Disconnect load, measure resistance. Should be >50 ohms. | | 2 Red, pause | Input Overvoltage | >30V on an input pin | Check sensor power supply. Replace damaged sensor. | | 3 Red, pause | Communication Timeout | Modbus RTU no response | Verify baud rate (default 9600). Check cable length (max 1200m). | | Green flashing | Normal operation | No errors | N/A | | Solid Red | Internal CPU fault | Firmware corruption or hardware failure | Contact supplier for RMA. Requires factory flash. |
While the policy is robust on paper, implementation faces hurdles:
| Blink Pattern | Error Name | Likely Cause | Solution | | :--- | :--- | :--- | :--- | | 1 Red, pause | Overcurrent on Output | Short circuit on Q0-Q3 | Disconnect load, measure resistance. Should be >50 ohms. | | 2 Red, pause | Input Overvoltage | >30V on an input pin | Check sensor power supply. Replace damaged sensor. | | 3 Red, pause | Communication Timeout | Modbus RTU no response | Verify baud rate (default 9600). Check cable length (max 1200m). | | Green flashing | Normal operation | No errors | N/A | | Solid Red | Internal CPU fault | Firmware corruption or hardware failure | Contact supplier for RMA. Requires factory flash. |
While the policy is robust on paper, implementation faces hurdles: d a s s 341 full